CN103671708A

CN103671708A - Torque fluctuation absorbing apparatus

Info

Publication number: CN103671708A
Application number: CN201310384856.9A
Authority: CN
Inventors: 登根诚; 神保优
Original assignee: Aisin Seiki Co Ltd
Current assignee: Aisin Corp
Priority date: 2012-08-29
Filing date: 2013-08-29
Publication date: 2014-03-26
Anticipated expiration: 2033-08-29
Also published as: US9394948B2; EP2703688A2; JP2014047805A; EP2703688A3; CN103671708B; EP2703688B1; US20140066216A1; JP5991085B2

Abstract

A torque fluctuation absorbing apparatus absorbing a torsional vibration includes a plate member (1, 101a, 101b, 101c, 201, 301a, 301d, 301g, 301j) configured to be provided at the power transmission system (120a) and including a rolling guide surface (121, 215, 315a, 315b), and a mass member (2, 202, 302k) rolling on the rolling guide surface of the plate member. The rolling guide surface includes plural first rolling guide surfaces (121a, 215a, 315b) each formed in an arc shape and provided radially inward relative to an outer circumferential portion of the plate member to be arranged in a circumferential direction and a second rolling guide surface (121b, 121d, 215b, 215c, 215d, 215e, 215f, 315a) allowing the mass member to roll on a locus which is different from a locus on the first rolling guide surface formed in the arc shape. Loci of the mass member are seamlessly switched from the locus in which the mass member rolls on the first rolling guide surface to the locus in which the mass member rolls on the second rolling guide surface.

Description

Torque fluctuation absorber

Technical field

The present invention relates generally to torque fluctuation absorber.

Background technique

For example in JP2003-65392A (being below called as references 1), disclose a kind of known to absorbing the torque fluctuation absorber of the torsional vibration of transmission system.

References 1 discloses a kind of dynamic damper (torque fluctuation absorber), and it is installed to the live axle (transmission system) of compressor and comprises pulley (board member) and six rollers (mass member) that are contained in respectively in reentrant part with the reentrant part that six circumferential equidistant separation in edge open.Each reentrant part of dynamic damper forms semicircular structure substantially.In references 1, disclosed dynamic damper is constructed to, and by the arc rolling guiding surface along by substantially the internal surface of semicircular reentrant part forms, with the mode of the pendulum roller that rolls, absorbs the torsional vibration of live axle.

According to disclosed dynamic damper (torque fluctuation absorber) in references 1, in the situation that present the torsional vibration of live axle (transmission system), be equal to or greater than predetermined extent, present roller (mass member) larger along the rolling scope on arc roller guide surface, this produces the end collision on roller and arc roller guide surface or the shortcoming of impacting.Therefore, according to the dynamic damper of references 1, due to roller when presenting the torsional vibration of live axle and be equal to or greater than predetermined extent can with roller guide surface collision, so produce noise.

Therefore, need a kind of torque fluctuation absorber, it can suppress the noise that collision that torsional vibration because of live axle presents mass member while being equal to or greater than predetermined extent produces.

Summary of the invention

According to aforementioned, a kind of torque fluctuation absorber that the torsional vibration of the transmission system of the torque ripple in response to motor is absorbed, comprising: board member, is configured to be arranged on described transmission system place and comprises rolling guiding surface; Mass member rolls on the rolling guiding surface of described board member.Described rolling guiding surface comprises: a plurality of the first rolling guiding surfaces, and each first rolling guiding surface is all formed arc and is arranged on the radially inner side with respect to the peripheral part of described board member, thereby is arranged along circumferential; With the second rolling guiding surface, allow described mass member to roll on the track different from forming track on the described first rolling guiding surface of arc.Be switched to the track that described mass member rolls at described the second rolling guiding surface the smooth trajectory that the track of described mass member rolls at described the first rolling guiding surface from described mass member.

According to torque fluctuation absorber of the present invention, when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, be switched to the track that mass member rolls at the second rolling guiding surface the smooth trajectory that the track of mass member rolls at the first rolling guiding surface of arc from mass member, the second rolling guiding surface is different from the first rolling guiding surface, with the track that allows the rolling track of mass member to roll at the first rolling guiding surface from mass member, is transitioned into smoothly the track that mass member rolls at the second rolling guiding surface.Therefore,, even when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, mass member also can not collide the limit component of the end of rolling guiding surface and the moving range of restriction mass member.Therefore,, even when presenting the torsional vibration of delivery system and be equal to or greater than predetermined extent, the noise producing because of the collision of mass member also can be limited.

According to structure of the present invention, be switched to the track that described mass member rolls on described the second rolling guiding surface on described the first rolling guiding surface after, be switched to the track that described mass member rolls at described the first rolling guiding surface the smooth trajectory rolling at described mass member the smooth trajectory that the track of described mass member further rolls at described the second rolling guiding surface from described mass member.

According to structure of the present invention, be switched to the track that mass member rolls at the second rolling guiding surface the smooth trajectory rolling at the first rolling guiding surface from mass member except the track of mass member, because be switched to the track that mass member rolls at the first rolling guiding surface the smooth trajectory that the track of mass member rolls at the second rolling guiding surface from mass member, so the track that the rolling track of mass member can roll at the first rolling guiding surface from mass member at the rolling track of mass member is switched to smooth transition in any situation that track that the rolling track of track that mass member rolls at the second rolling guiding surface and mass member rolls at the second rolling guiding surface from mass member is switched to the track that mass member rolls at the first rolling guiding surface.Therefore,, even when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, can further limit the noise producing because of mass member and the end of rolling guiding surface and the collision of limit component.Further, because when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, when even the track rolling at the first rolling guiding surface from mass member when the rolling track of mass member is transitioned into the track that mass member rolls at the second rolling guiding surface, the track that track can roll at the second rolling guiding surface from mass member easily turns back to the track that mass member rolls at the first rolling guiding surface, so the torsional vibration of transmission system can be returned the rolling of the mass member of the first rolling guiding surface, absorbs.

According to structure of the present invention, the described a plurality of first rolling guiding surfaces that form separately arc of described board member are formed along being circumferentially adjacent to each other via described the second rolling guiding surface.When presenting the torsional vibration of described transmission system and be equal to or greater than predetermined extent, described mass member moves to the first rolling guiding surface of adjacency via described the second rolling guiding surface.

According to structure of the present invention, when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, mass member is from the first rolling guiding surface along circumferentially move to the first rolling guiding surface of adjacency via the second rolling guiding surface, therefore allow mass member along the circumferential movement of board member, mass member contacts the first rolling guiding surface of the first rolling guiding surface, the second rolling guiding surface and adjacency simultaneously.Therefore, even when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, can effectively suppress mass member and move or shift along the larger of radially inward direction of board member.

According to structure of the present invention, described a plurality of the first rolling guiding surfaces comprise the outer circumferential side rolling guiding surface of a plurality of arcs, and described outer circumferential side rolling guiding surface is set to circumferentially be adjacent to each other on the edge, peripheral part place of described board member.When presenting the torsional vibration of described transmission system and be equal to or greater than predetermined extent, described the second rolling guiding surface is configured to connect described the first rolling guiding surface being adjacent to each other and be configured to guide described mass member to move to the outer circumferential side rolling guiding surface of adjacency.

According to structure of the present invention, when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, mass member is moved to the first rolling guiding surface smoothly by the second rolling guiding surface guiding.

According to structure of the present invention, described board member comprises the inner circumferential side limiting surface of a plurality of arcs, described inner circumferential side limiting surface is in the interior perimembranous place setting with respect to the radially inner side of described outer circumferential side rolling guiding surface that is arranged at of described board member, and described inner circumferential side limiting surface is moved along circumferentially arranging and limit the radially inside direction of described mass member.

According to structure of the present invention, even if presenting the radially outer centrifugal force that points to board member when mass member diminishes because of the rotating speed of transmission system diminishes, and while falling (movement) because of deadweight along the radially inward direction of board member, because preventing mass member, moves along the radially inward direction of board member inner circumferential side limiting surface, so can suppress mass member along the moving range increase radially of board member.

According to structure of the present invention, each in each in the limiting surface of described inner circumferential side and described outer circumferential side rolling guiding surface is relative to each other along circumferential offset half pitch.

According to structure of the present invention, because stop the distance radially along board member between outer circumferential side rolling guiding surface and inner circumferential side limiting surface partly excessively to increase, so can suppress the distance of fall of mass member when board member radially inwardly falls (movement), partly excessively increase.Therefore,, even when mass member whereabouts and collision inner circumferential side limiting surface (motion of mass member is limited by this inner circumferential side limiting surface), shorter downthrow defection reduces the noise causing because of collision.

According to structure of the present invention, torque fluctuation absorber comprises annular connector element, and it connects described mass member, makes described mass member keep each other intended distance

According to structure of the present invention, even when mass member moves to the first rolling guiding surface of adjacency from the first rolling guiding surface via the second rolling guiding surface, because the distance between mass member is kept by connector element, so can prevent adjacent mass member collision.Therefore, can suppress the noise that adjacent mass member produces because of collision.Further, by connecting a plurality of mass members by annular connector element, along a plurality of mass members that circumferentially arrange, can between the mass member adjacent with two, independent connector element be set respectively and compare by single connector element integrated connection, suppress like this increasing of number of spare parts.Further, because adjacent mass member is connected so that between them to keep or to maintain small distance, so do not compare with there is no the structure of connector element, can reduce the distance between adjacent mass member.Therefore, the mass member of greater number can be set, and can strengthen the assimilation effect of torsional vibration.

According to structure of the present invention, each in described a plurality of mass members comprises the first joining portion, and the first joining portion is formed with the one in protuberance and hole portion.Connector element comprises a plurality of the second joining portion, and each second joining portion is formed with the another one in protuberance and hole portion, and engages with the first joining portion of a plurality of mass members, with radially can move along board member.

According to structure of the present invention, the simple structure at the second joining portion forming by the first He You hole, the joining portion portion (protuberance) being formed by protuberance (hole portion), can easily keep the distance between mass member, allow when mass member rolls mass member along the radial motion of board member simultaneously.

According to structure of the present invention, the one in described connector element and described board member is formed with tapered portion or protuberance at described connector element and described board member towards part place each other.

According to structure of the present invention, because the contact size of connector element and board member and the contact radius of contacting part can reduce, so reduced because of the sliding hysteresis loss causing that hinders between connector element and board member.

According to structure of the present invention, the second rolling guiding surface forms plane.

According to structure of the present invention, because through or during through the second rolling guiding surface, when radially resisting centrifugal force and move inward, the amount of movement of mass member can be reduced, so compare along the radially inside outstanding structure of board member with the second rolling guiding surface, mass member more easily moves to the first rolling guiding surface of adjacency via the second rolling guiding surface.

According to structure of the present invention, described the second rolling guiding surface is constructed to allow described mass member with the less radius of gyration of the radius of gyration than on the first rolling guiding surface of described arc, to roll on described the second rolling guiding surface.

According to structure of the present invention, when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, be switched to the track (than thering is the less radius of gyration at the first rolling guiding surface) that mass member rolls at the second rolling guiding surface the smooth trajectory that can roll at the first rolling guiding surface from mass member due to the rolling track of mass member, when along board member radially inward direction moves time, mass member can roll by the less radius of gyration.Therefore, can effectively suppress mass member along the moving range increase radially of board member.

According to structure of the present invention, described mass member comprises periphery rolled portion and roller bearing portion, described periphery rolled portion is rolled on the first rolling guiding surface of described board member, the external diameter of described roller bearing portion is less than the external diameter of the periphery rolled portion of described mass member, and described roller bearing portion rolls on described the second rolling guiding surface.

According to structure of the present invention, when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, because the track that the rolling track of mass member rolls at the first rolling guiding surface from periphery rolled portion is switched to the track that roller bearing portion that external diameter is less than the external diameter of periphery rolled portion rolls at the second rolling guiding surface, the radius of gyration of roller bearing portion on the second rolling guiding surface is less than the radius of gyration on the first rolling guiding surface, when mass member along board member radially inward direction moves time, mass member can easily roll by the less radius of gyration.

According to structure of the present invention, described mass member comprises at least one in the first mass member and the second mass member; Described the second rolling guiding surface is formed by the internal surface that is set to run through the rolling bullport of described board member; And in described the first mass member and described the second mass member at least one described the first mass member and the wherein one of described the second mass member be arranged under the state at the first side of described board member and the one place of the second side, or at described the first mass member and described the second mass member, lay respectively under the first side of described board member and the state at any one place in the second side, at least one in described the first mass member and described the second mass member is connected to the described roller bearing portion that is arranged in described rolling bullport.

According to structure of the present invention, when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, allow the roller bearing portion of mass member easily along the second rolling guiding surface, to roll, the second rolling guiding surface consists of the internal surface of the rolling bullport of board member.

According to structure of the present invention, described board member comprises recess, and described recess is arranged on the first surface of described board member and at least one place in second surface and comprises described the first rolling guiding surface.At least one in described the first mass member and described the second mass member comprises described periphery rolled portion, and the periphery rolled portion of at least one in described the first mass member and described the second mass member is being positioned under the state of described recess along described the first rolling guiding surface rolling.When presenting the torsional vibration of described transmission system and be equal to or greater than predetermined extent, described roller bearing portion rolls along the internal surface that forms the described rolling bullport of described the second rolling guiding surface.

According to structure of the present invention, when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, be switched to the track that the second rolling guiding surface that roller bearing portion forms at the internal surface by rolling bullport rolls the smooth trajectory that the periphery rolled portion of at least one that the rolling track of mass member can be from the first mass member and the second mass member is rolled at the first rolling guiding surface of the reentrant part of board member.

According to the present invention, the second rolling guiding surface that the roller bearing portion of mass member rolls thereon forms radially shorter, the circumferential longer structure in edge along board member.

According to structure of the present invention, because it is even shorter that the second rolling guiding surface can become along the radial shape of board member, so when presenting the torsional vibration of transmission system and be equal to or greater than predetermined value, can effectively suppress mass member and move along the larger of radially inward direction of board member.

According to structure of the present invention, the one in described mass member and described board member is formed with tapered portion or protuberance at described mass member and described board member towards part place each other.

According to structure of the present invention, because the size of the area of contact of mass member and board member can reduce, so the hysteresis loss causing because of the sliding resistance between mass member and board member can reduce.

According to the present invention, torque fluctuation absorber comprises the anti-slip component of the periphery that is mounted to covering quality member.

According to structure of the present invention, when rolling on the first rolling guiding surface by anti-slip component, because restriction mass member slippage or slide, so can effectively absorb suffered by the torsional vibration of predetermined sequence.

Accompanying drawing explanation

From the following detailed description being explained with reference to the drawings, address supplementary features before of the present invention and characteristic will become obviously, wherein:

Fig. 1 is the schematic diagram illustrating according to the configuration of the first embodiment disclosed herein and the second embodiment's torque fluctuation absorber;

Fig. 2 is the stereogram illustrating according to the structure of the first embodiment's disclosed herein torque fluctuation absorber;

Fig. 3 is the exploded perspective view illustrating according to the structure of the first embodiment's disclosed herein torque fluctuation absorber;

Fig. 4 A is the schematic diagram of explaining the state rolling according to the rolling track of the mass member of the first embodiment's disclosed herein torque fluctuation absorber and mass member on the first rolling guiding surface;

Fig. 4 B is the schematic diagram of explaining the state rolling according to the rolling track of the mass member of the first embodiment's disclosed herein torque fluctuation absorber and mass member on the second rolling guiding surface;

Fig. 4 C is that explanation moves to the schematic diagram of the state of the first adjacent rolling guiding surface according to the rolling track of the mass member of the first embodiment's disclosed herein torque fluctuation absorber and mass member;

Fig. 5 is the view illustrating according to the rolling guiding surface of the first embodiment's disclosed herein torque fluctuation absorber;

Fig. 6 is the partial sectional view illustrating according to the surrounding of the mass member of the first embodiment's disclosed herein torque fluctuation absorber;

Fig. 7 A illustrates the first modified example of the first embodiment disclosed herein;

Fig. 7 B illustrates the second modified example of the first embodiment disclosed herein;

Fig. 7 C illustrates the first embodiment's disclosed herein the 3rd modified example;

Fig. 7 D illustrates the first embodiment's disclosed herein the 4th modified example;

Fig. 7 E illustrates the first embodiment's disclosed herein the 5th modified example;

Fig. 8 illustrates the first embodiment's disclosed herein the 6th modified example;

Fig. 9 illustrates the first embodiment's disclosed herein the 7th modified example;

Figure 10 illustrates according to the stereogram of the general structure of the second embodiment's disclosed herein torque fluctuation absorber;

Figure 11 illustrates according to the exploded perspective view of the general structure of torque fluctuation absorber disclosed herein;

Figure 12 is the schematic diagram of rolling track of mass member of explaining the second embodiment's disclosed herein torque fluctuation absorber;

Figure 13 is the partial sectional view illustrating according to the surrounding of the mass member of the second embodiment's disclosed herein torque fluctuation absorber;

Figure 14 is the schematic cross sectional views illustrating according to the structure of the mass member of the second embodiment's disclosed herein torque fluctuation absorber;

Figure 15 A illustrates the first modified example of the second embodiment disclosed herein;

Figure 15 B illustrates the second modified example of the second embodiment disclosed herein;

Figure 15 C illustrates the second embodiment's disclosed herein the 3rd modified example;

Figure 15 D illustrates the second embodiment's disclosed herein the 4th modified example;

Figure 15 E illustrates the second embodiment's disclosed herein the 5th modified example;

Figure 16 A illustrates the second embodiment's disclosed herein the 6th modified example;

Figure 16 B illustrates the second embodiment's disclosed herein the 7th modified example;

Figure 16 C illustrates the second embodiment's disclosed herein the 8th modified example;

Figure 16 D illustrates the second embodiment's disclosed herein the 9th modified example;

Figure 17 illustrates the second embodiment's disclosed herein the tenth modified example.

Embodiment

With reference to the example of the following drawings, explain the embodiment of torque fluctuation absorber.

With reference to Fig. 1 to 6, explain according to the structure of the first embodiment's torque fluctuation absorber 100.

As shown in Figure 1, torque fluctuation absorber 100 is arranged in the housing 110a of speed changer 110, and is configured to absorb the torsional vibration of bent axle (that is, the serving as transmission system) 120a causing because of the torque ripple in response to motor 120.More specifically, torque fluctuation absorber 100 is installed to the damper 130 in the housing 110a that is arranged at speed changer 110, and damper 130 is connected to the bent axle 120a of motor 120 via input shaft 110b.Damper 130 is arranged to absorb the torsional vibration of the bent axle 120a causing because of the torque ripple in response to motor 120 together with torque fluctuation absorber 100.Bent axle 120a is as the example of transmission system.Below will explain in detail according to the structure of the first embodiment's torque fluctuation absorber 100.

As shown in Figures 2 and 3, torque fluctuation absorber 100 comprises: board member 1, and board member 1 is the disc (ring) of hollow and is installed to bent axle 120a via damper 130 (seeing Fig. 1); A plurality of mass members 2; A pair of annular connector element 3 with a plurality of mass members that are connected to each other.

The board member 1 of being made by sheet-metal component comprises the circular hollow portion 11 running through along plate thickness direction and forms the recessed holding part 12 of annular along peripheral part 1a.As shown in Figures 2 to 4, holding part 12 is configured to a plurality of mass members 12 within it accommodating.Further, holding part 12 comprises the rolling guiding surface 121 that the inner surface by peripheral part 1a place forms.Rolling guiding surface 121 is configured to guide mass member 2 and makes it in the interior rolling of holding part 12.More specifically, as shown in Figures 3 to 5, rolling guiding surface 121 comprises the first rolling guiding surface 121a and a plurality of the second rolling guiding surface 121b that are connected the first adjacent rolling guiding surface 121a of a plurality of arcs.The first rolling guiding surface 121a is as the example of outer circumferential side rolling guiding surface.

Each in a plurality of the first rolling guiding surface 121a forms along the outstanding arc of the radially outward of board member 1.(the radius of curvature R 1 (seeing Fig. 5) of the first rolling guiding surface 121a of arc is set at a radius of curvature, the radius of curvature that mass member 2 most probables roll), this radius of curvature produces resonance when mass member 2 is rolled by the torsional vibration of predetermined sequence (that is the torsional vibration of the preset frequency that, mass member most probable rolls) on the first rolling guiding surface 121a.Therefore,, by mass member 2 is rolled (resonance) on the first rolling guiding surface 121a, can absorb the torsional vibration by predetermined sequence.Further, a plurality of the first rolling guiding surface 121a form being circumferentially adjacent to each other via the second rolling guiding surface 121b along board member 1.Further, a plurality of arc the first rolling guiding surface 121a radially inwardly arrange along the circumferential peripheral part 1a with respect to board member 1.A plurality of the second rolling guiding surface 121b radially inwardly arrange along the circumferential peripheral part 1a with respect to board member 1, and are configured to make mass member 2 to roll on the different track of the rolling track from the first rolling guiding surface 121a of mass member 2 at arc.A plurality of the second rolling guiding surface 121b are configured to, and when mass member 2 moves to the first adjacent rolling guiding surface 121a from the first rolling guiding surface 121a, guiding mass member 2 moves to the first adjacent rolling guiding surface 121a.

As shown in Figure 5, the first rolling guiding surface 121a forms and is the arc that radius of curvature is R1, and the second rolling guiding surface 121b forms and is plane.Further, the joint 121c of the first rolling guiding surface 121a and the second rolling guiding surface 121b forms and is curved surface, makes the first rolling guiding surface 121a of arc and the second rolling guiding surface 121b smooth connection of plane.

As shown in Figures 2 to 4, the holding part 12 of the board member 1 a plurality of arcs inner circumferential side limiting surface 122 that sidepiece forms that included, it is in the inner circumferential side (inner side radially) radially inwardly arranging with respect to rolling guiding surface 121 of board member 1.A plurality of inner circumferential sides limiting surface 122 is along being circumferentially arranged to limit radially moving of inward direction of mass member 2.More specifically, when the rotating speed of bent axle 120a diminishes, because present, radially to point to the centrifugal force of board member 1 outside less, so when mass member 2 radially falls (movement) to the inside of board member 1 because of deadweight, inner circumferential side limiting surface 122 prevents that the degree of mass member 2 whereabouts (movement) is equal to or greater than prearranging quatity (degree).In the situation that the rotating speed of bent axle 120a diminishes, because mass member 2 is connected to each other by connector element 3, so a plurality of mass member 2 whole fall (movement).Further, each in a plurality of inner circumferential sides limiting surface 122 all forms to the outstanding arc of the radially inward direction of board member 1.And as shown in Fig. 4 A to Fig. 4 C, a plurality of inner circumferential sides limiting surface 122 equidistant separation are opened, make the first rolling guiding surface 121a of relatively a plurality of arcs of each inner circumferential side limiting surface 122 along circumferential offset half pitch.That is to say, be arranged on the position that the second rolling guiding surface 121b between the first rolling guiding surface 121a of two arcs adjacent one another are is positioned at the limiting surface 122 center, inner circumferential side of corresponding arc.Further, the inner circumferential side limiting surface 122 of arc comprises the radius of curvature of the radius of curvature R that is less than the first rolling guiding surface 121a.

As shown in Figure 6, in the interior bottom surface 123 of the holding part 12 of board member 1, form towards the outstanding tapered portion 123a of mass member 2.Tapered portion 123a comprises substantially trapezoidal cross section, and along circumferentially forming in plane view and circularize smoothly.Tapered portion 123a is formed on towards the part place that connects the annular connector element 3 of a plurality of mass members 2.Further, prevent that the lid member 124 that mass member 2 leaves holding part 12 is arranged on the opposition side of interior bottom surface 123 with respect to mass member accommodating in holding part 12 2.Lid member 124 is for example arranged on board member 1 place regularly by clamp structure.Similar to interior bottom surface 123, at the part place in the face of connector element 3 of lid member 124, form towards the outstanding tapered portion 124a of mass member 2.Tapered portion 124a comprises substantially trapezoidal cross section, and along circumferentially forming in plane view and circularize smoothly.Alternatively, under those situations, by for example, preventing that by being arranged to the member (flywheel) of contiguous torque fluctuation absorber 100 mass member 2 from leaving the structure of holding part 12, needn't arrange and cover member 124.

The mass member 2 of being made by metal construction forms the columnar structure as shown in Fig. 2 to Fig. 4 C.As shown in Fig. 3, Fig. 4 A, Fig. 4 B, Fig. 4 C and Fig. 6, mass member 2 comprises the cylindricality rolling surface 21 being formed by its outer surface.Mass member 2 is contained in holding part 12, makes rolling surface 21 towards rolling guiding surface 121.Rolling surface 21 is scrolled guiding surface 121 mass member 2 that guides to roll.Further, as shown in Figure 6, anti-slip component 21a is attached on rolling surface 21, so that the peripheral part of covering quality member 2.Anti-slip component 21a is formed from a resin (for example, nylon 6 or polycaprolactam (PA6), nylon 66 (PA66)), and is arranged to suppress mass member 2 with respect to 121 slippages of rolling guiding surface.Further, as shown in Fig. 2, Fig. 3, Fig. 4 A, Fig. 4 B, Fig. 4 C and Fig. 6, mass member 2 be arranged in each in two apparent surfaces 22 with rolling surface 21 quadratures of mass member 2, form protuberance 221.Protuberance 221 forms cylindricality, and is positioned at the center of circular side surface 22.Protuberance 221 serves as the example at the first joining portion.

As shown in Figure 3 and Figure 6, as a pair of annular connector element 3, be arranged in two apparent surface 22 places and clamp mass member 2.Further, as shown in Fig. 2, Fig. 4 A, Fig. 4 B and Fig. 4 C, connector element 3 connects a plurality of mass members 2, keeps simultaneously or maintain mass member 2 along circumferential equidistant separation, opening the state of intended distance.Particularly, as shown in Fig. 3, Fig. 4 A, Fig. 4 B, Fig. 4 C and Fig. 6, connector element 3 comprises a plurality of hole portion 31, and each hole portion forms oblong or avette (trade shape), and the protuberance 221 of mass member 2 is inserted in each hole portion to engage.Hole portion 31 is as the example at the second joining portion.A plurality of hole portion 31 is along circumferentially spaced, and forms along thickness of slab direction and run through connector element 3.Further, form rectangular or avette hole portion 31 forms the radially extension along board member 1.The protuberance 221 of mass member 2 engages with hole portion 31, makes protuberance 221 radially removable.More specifically, when mass member 2 is when the first rolling guiding surface 121a sentences pendulum mode and rolls, oblong or avette hole portion 31 allow mass members 2 radially to move.Further, hole portion 31 allows mass members 2 radially to move inward, avoid simultaneously mass member 2 protuberance 221 contact hole portions 31 radial inner end and avoid mass member 2 contact inner circumferential side limiting surfaces 122.

Connector element 3 for example, is made by being good at heat-resisting, wear-resisting resin (aldehyde resin), therefore compare with the structure of metal connector element 3, the noise producing because of the protuberance 221 of mass member 2 and the collision of the hole portion 31 of connector element 3 can be lowered.Further, as shown in Figure 6, the thickness of slab of connector element 3 is greater than the projecting height of protuberance 221, bottom surface 123 and lid member 124 that the protuberance that is arranged in hole portion 31 221 that makes mass member 2 can contact plate member 1.

According to the first embodiment's torque fluctuation absorber 100, the resonance that the torsional vibration of the predetermined sequence of bent axle 120a is caused by the rolling motion of pendulum mode on the corresponding first rolling guiding surface 121a of board member 1 by a plurality of mass members 2 absorbs.Further, according to torque fluctuation absorber 100, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, be switched to the track that mass member 2 rolls at the second rolling guiding surface 121b the smooth trajectory that the track of mass member 2 rolls at the first rolling guiding surface 121a from mass member 2.Further, torque fluctuation absorber 100 is configured to, the smooth trajectory rolling at the first rolling guiding surface 121a from mass member 2 be switched to the track that mass member 2 rolls at the second rolling guiding surface 121b after, the track that track is rolled at the second rolling guiding surface 121b from mass member 2 is further switched to the track that mass member 2 rolls at the first rolling guiding surface 121a smoothly.That is to say, as shown in Fig. 4 A to Fig. 4 C, when the torsional vibration of bent axle 120a is less than predetermined extent, mass member 2 rolls in pendulum mode on the first rolling guiding surface 121a, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, mass member 2 moves to the first adjacent rolling guiding surface 121a from the first rolling guiding surface 121a via the second rolling guiding surface 121b.

Hereinafter, with reference to Fig. 4 and Fig. 5, explain according to the rolling track of the mass member 2 of the first embodiment's torque fluctuation absorber 100.

In the situation that the torsional vibration of bent axle 120a is less than predetermined extent, mass member 2 rolls in pendulum mode on the first rolling guiding surface 121a, to absorb the torsional vibration by predetermined sequence.As shown in Figure 4 A and 4 B shown in FIG., when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, present mass member 2 larger in the rolling scope at the first rolling guiding surface 121a place, make mass member 2 move to the second rolling guiding surface 121b.A plurality of mass members 2 move in the intended distance keeping each other by connector element 3.Further, at the second rolling guiding surface 121b place, permission mass member 2 radially moves inward along board member 1, avoids the inner end of the hole portion 31 of protuberance 221 contact connector elements 3 simultaneously.Under those situations, restriction mass member 2 inwardly moves, and makes mass member 2 can not contact inner circumferential side limiting surface 122.Therefore, when rolling on the second rolling guiding surface 121b, mass member 2 rolls on mobile little track, or radially inwardly shifting along board member 1.Further, because the first rolling guiding surface 121a and the second rolling guiding surface 121b are smoothly connected by the joint 121c (seeing Fig. 5) with curved surface, mass member 2 moves to the second rolling guiding surface 121b smoothly from the first rolling guiding surface 121a.

So mass member 2 rolls having on the second rolling guiding surface 121b of plane, to move to the first rolling guiding surface 121a.Under those situations, because the second rolling guiding surface 121b and the first adjacent rolling guiding surface 121a are smoothly connected by the joint 121c with curved surface, mass member 2 moves to the first adjacent rolling guiding surface 121a smoothly from the second rolling guiding surface 121b.That is to say, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, smooth trajectory that the rolling track of mass member 2 rolls at the first rolling guiding surface 121a from mass member 2 ground or be switched to continuously the track that mass member 2 rolls at the second rolling guiding surface 121b, and the smooth trajectory further rolling at the second rolling guiding surface 121b from mass member 2 ground or be switched to continuously the track that mass member 2 rolls at the first rolling guiding surface 121a.Further, during moving to the first adjacent rolling guiding surface 121a from the first rolling guiding surface 121a via the second rolling guiding surface 121b at mass member 2, mass member 2 continuous contact rolling guiding surfaces 121 (the first rolling guiding surface 121a and the second rolling guiding surface 121b), to roll, but can not contact inner circumferential side limiting surface 122 thereon.In addition, mass member 2 repeats from the first rolling guiding surface 121a via the second rolling guiding surface 121b rolling motion, to adjacent the first rolling guiding surface 121a, until the torsional vibration of bent axle 120a presents, to be less than predetermined extent.

According to the first embodiment, because the ground of the smooth trajectory by the track of mass member 2 being configured to roll at the first rolling guiding surface 121a that forms arc from mass member 2 or be switched to continuously the track (they are different from the track that mass member 2 rolls at the first rolling guiding surface 121a) that mass member 2 rolls at the second rolling guiding surface 121b, the rolling track of mass member 2 can be transitioned into the second rolling guiding surface 121b glossily from the first rolling guiding surface 121a, even so when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, this embodiment's mass member 2 can not collide the limit component of moving range and the end of rolling guiding surface of restriction mass member 2 yet.Therefore,, even when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, also can suppress the noise that the collision because of mass member 2 produces.

According to this structure, wherein when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, smooth trajectory that the track of mass member 2 rolls at the first rolling guiding surface 121a that forms arc from mass member 2 ground or be switched to continuously mass member 2 at the track of the second rolling guiding surface 121b (they are different from the first rolling guiding surface 121a) rolling, after supposing that track that the track at mass member 2 rolls at the first rolling guiding surface 121a from mass member 2 is switched to the track that mass member 2 rolls at the second rolling guiding surface 121b, the track that mass member 2 rolls on the second rolling guiding surface 121b is configured to mobile little straight line or curve, or radially inwardly shifting along board member 1, mass member 2 is suppressed carries out larger movement, or radially inwardly shifting along board member 1.Under those situations, because can limit mass member 2 along the moving range radially of board member 1, so can dwindle by this degree the size of torque fluctuation absorber 100, therefore, result is when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, can be when dwindling the size of reversing fluctuation absorption plant 100, suppress the noise that the collision because of mass member 2 produces.

Further, according to the first embodiment, the smooth trajectory ground rolling at the first rolling guiding surface 121a from mass member 2 at the track of mass member 2 or be switched to continuously the track that mass member 2 rolls at the second rolling guiding surface 121b after, the track of mass member 2 is switched to and makes the smooth trajectory ground that the track of mass member 2 further rolls at the second rolling guiding surface 121b from mass member 2 or be switched to continuously the track that mass member 2 rolls at the first rolling guiding surface 121a.Therefore, the smooth trajectory ground rolling on the first rolling guiding surface 121a except mass member 2 or be switched to continuously the track that mass member 2 rolls on the second rolling guiding surface 121b, because the smooth trajectory that track rolls at the second rolling guiding surface 121b from mass member 2 ground or be switched to continuously the track that mass member 2 rolls at the first rolling guiding surface 121a, so the rolling track of mass member 2 can transition glossily in following any situation, the track that the rolling track of mass member 2 rolls at the first rolling guiding surface 121a from mass member 2 is switched to the track that mass member 2 rolls at the second rolling guiding surface 121b, the track that the rolling track of mass member 2 rolls at the second rolling guiding surface 121b from mass member 2 is switched to the track that mass member 2 rolls at the first rolling guiding surface 121a.Therefore,, even when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, also can further suppress the noise for example producing because of mass member 2 and the end of rolling guiding surface and the collision of limit component.

Further, in the situation that present the torsional vibration of bent axle 120a, be equal to or greater than predetermined extent, when even the track rolling at the first rolling guiding surface 121a from mass member 2 when the rolling track of mass member 2 changes to the track that mass member 2 rolls at the second rolling guiding surface 121b, the track that track can roll at the second rolling guiding surface 121b from mass member 2 easily turns back to the track that mass member 2 rolls at the first rolling guiding surface 121a, therefore, the rolling that the torsional vibration of bent axle 120a can be turned back to the first rolling guiding surface 121a by mass member 2 absorbs.

According to the first embodiment, a plurality of first rolling guiding surface 121a that form arc of board member 1 are arranged to along circumferentially adjacent one another are via the second rolling guiding surface 121b, when the torsional vibration of bent axle 120a becomes while being equal to or greater than predetermined extent, mass member 2 moves to the first adjacent rolling guiding surface 121a via the second rolling guiding surface 121b.Thus, because when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, mass member 2 is from the first rolling guiding surface 121a along circumferentially moving to the first adjacent rolling guiding surface 121a via the second rolling guiding surface 121b, and mass member 2 is in maintenance or maintain in circumferential contact the first rolling guiding surface 121a, the second rolling guiding surface 121b of board member 1 and adjacent the first rolling guiding surface 121a and move.Therefore, even when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, also can effectively suppress mass member 2 move larger, or radially inwardly shifting along board member 1.

Further, according to the first embodiment, along circumferential a plurality of arcs the first rolling guiding surface 121a adjacent one another are, be arranged on the outer circumferential side place of board member 1, the second rolling guiding surface 121b is arranged to connect the first rolling guiding surface 121a adjacent one another are, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, guiding mass member 2 moves to the first adjacent rolling guiding surface 121a.Therefore,, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, mass member 2 is moved to the first adjacent rolling guiding surface 121a smoothly by the second rolling guiding surface 121b guiding.

Further, according to the first embodiment, along what circumferentially arrange, for limiting the mass member 2 a plurality of arcs inner circumferential side limiting surface 122 moving radially, can be arranged on the radially inner side place of the relative first rolling guiding surface 121a of board member 1.Therefore, while diminishing due to the rotating speed as bent axle 120a, the centrifugal force that presents the radially outward direction of pointing to board member 1 diminishes, even so when mass member 2 is because of deadweight during radially to the interior whereabouts of board member 1 (movement), inner circumferential side limiting surface 122 also can limit mass member 2 radially to the interior movement of board member 1, thereby can limit mass member 2 along the moving range increase radially of board member 1.

Further, according to the first embodiment, inner circumferential side limiting surface 122 is along being circumferentially offset half pitch with respect to the first rolling guiding surface 121a.According to aforementioned structure, because prevent that between the first rolling guiding surface 121a and inner circumferential side limiting surface 122, the distance radially along board member 1 partly excessively increases, so when mass member 2 is during along radially inwardly the falling of board member 1 (movement), can limit the partly excessively increase of distance of fall (displacement distance) of mass member 2.Therefore,, even fall or mobile and during with 122 collisions of inner circumferential side limiting surface (that is, the motion of restriction mass member 2) when mass member 2, also can make the degree of the distance of fall that reducing noise that collision causes shortens.

Further, according to the first embodiment, annular connector element 3 connects a plurality of mass members 2, the state that simultaneously keeps a plurality of mass members 2 to keep each other intended distance equidistant separation to open.Therefore, even when mass member 2 moves to the first adjacent rolling guiding surface 121a from the first rolling guiding surface 121a via the second rolling guiding surface 121b, because the distance that connector element 3 keeps between mass member 2, so can prevent contact or the collision of adjacent mass member 2.Therefore the noise that, inhibition produces because of collision.

Further, by connecting a plurality of mass members by annular connector element 3, because can connect into a branch of by single connector element 3 along a plurality of mass members 2 that circumferentially arrange, so the structure of independent connector element is set between connector element 2 adjacent with each, compare, can suppress number of components and increase.Further, because adjacent mass member 2 keeps small distances to separate or interval each other can be connected under maintained state with small distance at these mass members 2, so compare with the structure that connector element 3 is not wherein set, can reduce distance or interval between adjacent mass member 2.Because a large amount of mass member 2 can be set according to aforementioned structure, therefore can strengthen the assimilation effect of torsional vibration.

Further, according to the first embodiment, on each mass member 2 in a plurality of mass members 2, be equipped with protuberance 221, and on connector element 3, be provided with hole portion 31, each protuberance in the protuberance 221 of a plurality of mass members 2 all engages each hole portion 31, so that radially removable along board member 1.Therefore, by the simple structure of protuberance 221 and hole portion 31, can keep distance or interval between mass member 2, allow mass member 2 moving radially along board member 1 when rolling simultaneously.

Further, according to the first embodiment, the part place facing with each other at connector element 3 and board member 1 forms tapered portion 123a.Like this, because can reduce the area of contact of connector element 3 and board member 1, so can reduce the caused hysteresis loss of sliding resistance between connector element 3 and board member 1.

According to the first embodiment, the second rolling guiding surface 121b forms and is plane.Therefore, form radially and compare to the interior outstanding structure of board member 1 with the second rolling guiding surface 121b, because roll on the second rolling guiding surface 121b, or through or when the second rolling guiding surface 121b mass member 2 overcome the amount of movement that centrifugal force radially moves inward and can reduce, so mass member 2 can more easily move to the first adjacent rolling guiding surface 121a via the second rolling guiding surface 121b.

Further, according to the first embodiment, anti-slip component 21a is configured to the periphery of covering quality member 2.Therefore,, because when rolling on the first rolling guiding surface 121a, anti-slip component 21a suppresses mass member 2 slippages, so the torsional vibration of the predetermined sequence being subject to can effectively be absorbed.

The first to the 7th modified example of the first embodiment will be explained below.As shown in Figure 6, according to the first embodiment, on the interior bottom surface 123 of the holding part 12 of board member 1 and lid member 124, form respectively towards the outstanding tapered portion 123a of mass member 2 and tapered portion 124a.Yet this structure can be modified as respectively the first to the 5th modified example as shown in Fig. 7 A to Fig. 7 E.

More specifically, according to the first modified example shown in Fig. 7 A, at the part place towards board member 101a (lid member 124b) of connector element 103a, form the outstanding tapered portion 103b towards board member 101a (lid member 124b).Further, according to the second modified example shown in Fig. 7 B, at the part place towards board member 101a (lid member 124b) of connector element 3c, form towards the recessed tapered portion 103d of mass member 2.Further, according to the 3rd modified example shown in Fig. 7, at the part place towards board member 101a (lid member 124b) of connector element 103e, form the outstanding protuberance 103f towards board member 101a (lid member 124b).In addition, according to the 4th modified example as shown in Fig. 7 D, on the interior bottom surface 123b of the holding part 12 of board member 101b and lid member 124c, form along tapered portion 123c and the tapered portion 124d recessed with mass member 2 opposite directions respectively.Further, according to the 5th modified example as shown in Fig. 7 E, on the interior bottom surface 123d of the holding part 12 of board member 101c, form respectively to the outstanding protuberance 123e of mass member 2 and protuberance 124f.

Although, according to first embodiment the second rolling guiding surface 121b, form and be plane, but alternatively, according to the 6th modified example of the first embodiment shown in Fig. 8, the second rolling guiding surface 121b forms the arc that radius of curvature is R2, and this radius of curvature R 2 is less than the radius of curvature R 1 of the first rolling guiding surface 121a.Under those situations, the second rolling guiding surface 121d forms radially to outstanding arc in board member.Further, the joint 121e of the first rolling guiding surface 121a and the second rolling guiding surface 121b is by Surface forming, to be smoothly connected the first rolling guiding surface 121a (it is curved) and the second rolling guiding surface 121d (it is along the direction outstanding arc contrary with the projected direction of the first rolling guiding surface 121a).

Further, although according to the first embodiment, connector element 3 and mass member 2 are set respectively, alternatively, according to the 7th modified example of the first embodiment shown in Fig. 9, a pair of annular connector element 103g and mass member 2a are one-body molded.Particularly, under the state of the protuberance 221a location of mass member 2a or the hole portion 131 of insertion connector element 103g, by riveting the point of protuberance 221a, form the 221b of rivet clasp portion.The 221b of rivet clasp portion prevents that connector element 103g from falling or is disengaged with mass member 2a, and forms mass member 2a and connector element 103g.Therefore, because a plurality of mass member 2a and the annular connector element 103g that use in pairs can form a unit (that is, forming sub-component), so can strengthen assembly working or the assembling performance of torque fluctuation absorber.Under those situations, hole portion 131 is as the example at the second joining portion, and protuberance 221a is as the example at the first joining portion.

With reference to Figure 10 to 14 explanation torque fluctuation absorber according to a second embodiment of the present invention.According to the second embodiment, the second rolling guiding surface 125b (, as rolling guiding surface) be constructed to, make with the first rolling guiding surface 125a at arc (, as rolling guiding surface) above roll and compare, the mass member 202 rolling thereon has the less radius of gyration.

As shown in Figure 10 to 12, according to the second embodiment's torque fluctuation absorber 200, comprise board member 201 and a plurality of mass member 202, board member 201 forms the dish-type (ring) of hollow and is installed to bent axle 120a (seeing Fig. 1) via damper 130 (seeing Fig. 1).

By the metal board member 201 that forms plate shape, comprise hollow portion 211, hollow portion 211 forms the dish type running through along plate thickness direction.Further, as shown in Figure 10, Figure 11 and Figure 13, form the first recess 212 (that is, as recess) at the first surface 201a place of board member 201, it comprises along the inner surface structure of a plurality of arcs is circumferentially set continuously.Similarly, form the second recess 213 (that is, as recess) on the second surface 201b of board member 201, it comprises along the inner surface structure of a plurality of arcs is circumferentially set continuously.The first recess 212 and the second recess 213 are as the example of recess.Further, as shown in Figure 11 to Figure 13, board member 201 comprises a plurality of oval rolling guiding surface running through along plate thickness direction.Further, board member 201 comprises the rolling guiding surface 215 that guiding mass member 202 rolls.Rolling guiding surface 215 comprises a plurality of arcs first rolling guiding surface 215a of the internal surface that is configured with the first recess 212 (the second recess 213) and is configured with a plurality of oval second rolling guiding surface 215b of the internal surface of a plurality of rolling bullports 214.

A plurality of the first rolling guiding surface 215a are radially inside with respect to the peripheral part 201c of board member 201 along being circumferentially arranged to, and mass member 202 is rolled thereon.Further, a plurality of the first rolling guiding surface 215a form radially to the outstanding arc in the outside of board member 201.In addition, the second rolling guiding surface 215b and the first rolling guiding surface 215a divide and are arranged, and form mass member 202 is rolled with the track being different from arc the first rolling guiding surface 215a thereon.Under those situations, the second rolling guiding surface 215b guiding mass member 202 rolls, simultaneously limit mass member 202 radially in board member 201 motion in (inwardly week).More specifically, the second rolling guiding surface 215b forms the radius of gyration that mass member 202 is rolled on this second rolling guiding surface 215b and is less than the radius of gyration on the first rolling guiding surface 215a of arc.Further, oval the second rolling guiding surface 215b forms the circumferential lengthening along board member 201, and forms radially shortening along board member 201.That is to say, oval the second rolling guiding surface 215b is arranged so that, semi-minor axis is positioned at along board member 201 radially, and major semi axis is positioned at along the direction radially perpendicular to board member 201.

As shown in Figure 11 and Figure 13, mass member 202 comprise the dish type at the first surface 201a place that is positioned at board member 201 the first 202a of mass member portion, be positioned at board member 201 second surface 201b place dish type the second 202b of mass member portion and connect the first 202a of mass member portion and the 202c of roller bearing portion of the second 202b of mass member portion.The first 202a of mass member portion and the second 202b of mass member portion are used separately as the first mass member and the second mass member.

The first 202a of mass member portion and the second 202b of mass member portion are made of metal.The first 202a of mass member portion is positioned at the first recess 212 of mass member 201, and is included in the upper first periphery rolled portion 202d rolling of the first rolling guiding surface 215a of the first recess 212.Further, the second 202b of mass member portion is positioned at the second recess 213 of board member 201, and is included in the upper second periphery rolled portion 202e rolling of the first rolling guiding surface 215a of the second recess 213.The first periphery rolled portion 202d and the second periphery rolled portion 202e form identical structure (that is, girth is identical with thickness).The first periphery rolled portion 202d and the second periphery rolled portion 202e are as the example of periphery rolled portion.Further, as shown in Figure 11 and Figure 14, the first 202a of mass member portion is formed with the through hole 202f inserting for the 202c of roller bearing portion.In addition, as shown in figure 14, the 202g of enlarged diameter portion that internal diameter strengthens is formed on the end of being positioned at of through hole 202f that side relative with the second residing side of the 202b of mass member portion.

As shown in Figure 13 and Figure 14, the part towards board member 201 of the first 202a of mass member portion (the second 202b of mass member portion) can form even shape, yet the resistance in order to reduce to roll, is formed with towards the outstanding tapered portion 202h of board member 201 (tapered portion 202i).Tapered portion 202h (tapered portion 202i) forms frustum, or circular flat nose cone.As shown in figure 13, anti-slip component 21b is attached to the first periphery rolled portion 202d (the second periphery rolled portion 202e) of the first 202a of mass member portion (the second 202b of mass member portion), to cover the periphery of the first 202a of mass member portion (the second 202b of mass member portion).The anti-slip component 21b for example, being made by resin (, nylon 6 or polycaprolactam (PA6), nylon 66 (PA66)) is configured to suppress mass member 202a (the second 202b of mass member portion) with respect to 121 slippages of rolling guiding surface.Further, at the first 202a of mass member portion (the second 202b of mass member portion), be positioned under the state of the first recess 212 (the second recess 213), the surface that is positioned at that the side place relative with side towards board member 201 of the first 202a of mass member portion (the second 202b of mass member portion) forms with the first surface 201a (second surface 201b) of board member 201 and flushes.

As shown in Figure 11 to 14, the 202c of roller bearing portion being made of metal is arranged on the second 202b of mass member portion place regularly.Further, the diameter of the 202c of roller bearing portion is less than the diameter of the first periphery rolled portion 202d (the second periphery rolled portion 202e).Further, the 202c of roller bearing portion is configured to, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, at the 202c of roller bearing portion, be arranged under the state of rolling bullport 214 of board member 201, on ellipse the second rolling guiding surface 215b that the 202c of roller bearing portion forms at the internal surface by rolling bullport 214, roll.Further, as shown in figure 14, the end difference 202j that diameter is less forms and makes the diameter of the 202c of roller bearing portion at point place present the diameter that is less than base portion place on the 202c of roller bearing portion.

Further, the 202c of roller bearing portion is constructed to be arranged in the point by the riveted joint 202c of roller bearing portion under the state of through hole 202f of the first 202a of mass member portion at the 202c of roller bearing portion and forms the 202k of rivet clasp portion.More specifically, the 202k of rivet clasp portion is positioned at by the 202c of roller bearing portion being inserted to the through hole 202f and inserting from the second surface 201b side of board member 201 at the 202c of roller bearing portion at the first surface 201a place that is arranged in board member 201 of the first 202a of mass member portion to rivet to process the state of rolling bullport 214 (seeing Figure 13) and forms.Therefore, at the first 202a of mass member portion and the second 202b of mass member portion, be separately positioned under the state at the place, side of first surface 201a of board member 201 and the place, side of the second surface 201b of board member 201, the first 202a of mass member portion and the second 202b of mass member portion are permanently connected by the 202c of roller bearing portion that is positioned at rolling bullport 214 places.Further, when the first 202a of mass member portion touches the end difference 202j of the 202c of roller bearing portion, the first 202a of mass member portion is connected by the 202c of roller bearing portion with the second 202b of mass member portion, keeps intended distance each other simultaneously.Intended distance between the first 202a of mass member portion and the second 202b of mass member portion is a bit larger tham the thickness of slab of the part corresponding to the distance between the second recess 213 and the bottom surface of the first recess 212 of board member 201.Further, the 202k of rivet clasp portion of the 202c of roller bearing portion is contained in the 202g of enlarged diameter portion of the first 202a of mass member portion, to flush with the first 202a of mass member portion.

As shown in figure 13, the noise reduction member 21c for example, being made by resin (, nylon 6 or polycaprolactam (PA6), nylon 66 (PA66)) is attached to the 202c of roller bearing portion, to cover the periphery of the 202c of roller bearing portion.Noise reduction member 21c be arranged in when the centrifugal force of the radial outside towards board member 201 because of the rotating speed of bent axle 120a during compared with low reducing, mass member 202 falls to the radially inner side of board member 201 because of deadweight in the situation of (movement), the noise that reduction produces because of the collision of the 202c of roller bearing portion and the second rolling guiding surface 215b.

By aforementioned structure, according to the second embodiment's torque fluctuation absorber 200, be configured to, by making a plurality of mass members 202 roll to produce resonance in the mode of pendulum on the first rolling guiding surface 215a of board member 201, thereby absorb the torsional vibration of the predetermined sequence of bent axle 120a.Further, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, the track that the track of mass member 202 rolls at the first rolling guiding surface 215a from mass member 202 is switched to the track that mass member 202 rolls at the second rolling guiding surface 215b continuously or smoothly.Further, torque fluctuation absorber 200 is constructed to after the track that the track of mass member 202 is rolled at the first rolling guiding surface 215a from mass member 202 is switched to the track that mass member 202 rolls at the second rolling guiding surface 215b continuously or smoothly, the smooth trajectory the ground further track of mass member 202 being rolled at the second rolling guiding surface 215b from mass member 202 or be switched to continuously the track that mass member 202 rolls at the first rolling guiding surface 215a.

With reference to Figure 12, explain according to the rolling track of the mass member 202 of the second embodiment's torque fluctuation absorber 200 hereinafter.

When the level of the torsional vibration of bent axle 120a is during lower than predetermined extent, at the first 202a of mass member portion of mass member 202 (the second 202b of mass member portion (seeing Figure 13)), be positioned under the state that first recess 212 (the second recess 213) of board member 201 locates, the first periphery rolled portion 202d (the second periphery rolled portion 202e (seeing Figure 13)) rolls in pendulum mode along the first rolling guiding surface 215a.More specifically, when the level of the torsional vibration of bent axle 120a is during lower than predetermined extent, mass member 202 along the first rolling guiding surface 215a with rolling in the scope between the position of (c) indication in position and Figure 12 of (b) indication in Figure 12 of pendulum mode, the position of (b) indication in Figure 12, the position of mass member 202 (a) indication from Figure 12 is mobile predetermined angle (for example 30 °) along clockwise direction, the position of (a) indication in Figure 12, mass member 202 is positioned at the outermost position place radially along board member 201, the position of (c) indication in Figure 12, mobile predetermined angle (for example 30 °) is (in the counterclockwise direction in the position of mass member 202 (a) indication from Figure 12, predetermined angle-α).That is to say, when the torsional vibration of bent axle 120a is during lower than predetermined extent, mass member 202 be take scope that (a) indicate as cardinal principle center, roll in pendulum mode in Figure 12 in the scope between the position of (b) indication and the position of (c) indication along the first rolling guiding surface 215a.Under those situations, by in the situation that the second rolling guiding surface 215b forming without the internal surface place of the rolling bullport 214 of the 202c of roller bearing portion contact plate member 201, mass member 202 rolls in pendulum mode, thereby absorbs the torsional vibration that bent axle 120a presses predetermined sequence.In the situation that the center O of arc the first rolling guiding surface 215a is defined as benchmark, the rotation angle (move angle) of aforementioned predetermined angle (predetermined angle ,-α, for example corresponding 30 ° ,-30 °) corresponding mass member 202.

On the other hand, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, the 202c of roller bearing portion of mass member 202 rolls along the internal surface that forms the rolling bullport 214 of the second rolling guiding surface 215b.More specifically, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, the rolling scope of mass member 202 increases, thereby moves along clockwise direction from the position shown in Figure 12 (a) position that exceeds predetermined angle (that is, the position in Figure 12 (b)).Under those situations, the track that the rolling track of mass member 202 rolls at the first rolling guiding surface 215a from the first periphery rolled portion 202d (the second periphery rolled portion 202e (seeing Figure 13)) is switched to the track that the 202c of roller bearing portion rolls at the second rolling guiding surface 215b continuously or smoothly.Then, the rolling motion rolling along the second rolling guiding surface 215b by the 202c of roller bearing portion, said sequence is pressed along clockwise direction through position (d), (e), (f), (g) and (h) in-position (c) in the position (b) of mass member 202 from Figure 12.Through the position (b) of Figure 12 until in-position (c) afterwards, mass member 202 rolls, and the first periphery rolled portion 202d (the second periphery rolled portion 202e (seeing Figure 13)) can not contact the first rolling guiding surface 215a.Under those situations, the radius of gyration of the track of the radius of gyration of the track that mass member 202 rolls on the second rolling guiding surface 215b when rolling on the first rolling guiding surface 215a at arc is little.

After this, in the position of Figure 12 (c), the track that the rolling track of mass member 202 rolls at the second rolling guiding surface 215b from the 202c of roller bearing portion is switched to the track that the first periphery rolled portion 202d (the second periphery rolled portion 202e (seeing Figure 13)) rolls at the first rolling guiding surface 215a continuously or smoothly.Then, until the torsional vibration of bent axle 120a presents, be less than predetermined extent, between the track that the track that track rolls on the first rolling guiding surface 215a at mass member 202 and mass member 202 roll on the second rolling guiding surface 215b, repeat to switch.According to the direction of the torsional vibration of bent axle 120a, (mass member 202a can exceed predetermined angle in the counterclockwise direction from the position (a) of Figure 12, predetermined angle-α) position (, position in Figure 12 (c)), along the counter clockwise direction of Figure 12, press said sequence through position (h), (g), (f), (e) and (d) in-position (b).Even, under those situations, the rolling track of mass member 202 switches smoothly or continuously.

Other structures of the second embodiment are basically the same as those in the first embodiment.

According to the second embodiment, as mentioned above, the second rolling guiding surface 215b forms the situation of rolling on arc the first rolling guiding surface 215a with mass member 202 is compared, and mass member 202 rolls by the less radius of gyration on the second rolling guiding surface 215b.Therefore, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, smooth trajectory that the rolling track of mass member 202 can roll at the first rolling guiding surface 215a from mass member 202 ground or be switched to continuously mass member 202 the radius of gyration than the first rolling guiding surface 215a on the track that rolls of the second less rolling guiding surface 215b, therefore, when mass member 202 is during radially to board member 201 medial movement, mass member 202 rolls by the less radius of gyration.Therefore, can effectively suppress mass member 202 along the moving range radially of board member 201.

Further, according to the second embodiment, as mentioned above, mass member 202 is provided with the first periphery rolled portion 202d (the second periphery rolled portion 202e) rolling on the first rolling guiding surface 215a of board member 201, and the external diameter of the first periphery rolled portion 202d of external diameter specific mass member 202 (the second periphery rolled portion 202e) 202c of roller bearing portion less and that roll on the second rolling guiding surface 215b.Therefore, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, the track that the rolling track of mass member 202 rolls at the first rolling guiding surface 215a from the first periphery rolled portion 202d (the second periphery rolled portion 202e) is switched to the track that external diameter rolls by the less radius of gyration of the radius of gyration than rolling at the first rolling guiding surface 215a at the second rolling guiding surface 215b than the less 202c of roller bearing portion of the external diameter of the first periphery rolled portion 202d (the second periphery rolled portion 202e), therefore, when mass member 202 is during radially to board member 201 medial movement, mass member 202 can easily roll by the less radius of gyration.

Further, according to the second embodiment, as mentioned above, the second rolling guiding surface 215b is formed by the internal surface that runs through the rolling bullport 214 of board member 201 settings, at the first 202a of mass member portion and the second 202b of mass member portion, lay respectively under the first side of board member 201 and the state of the second side, the first 202a of mass member portion is connected by being arranged in the 202c of roller bearing portion of rolling bullport 214 with the second 202b of mass member portion.Therefore,, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, the second rolling guiding surface 215b that the 202c of roller bearing portion of mass member 202 can be easily forms along the internal surface of the rolling bullport 214 by board member 201 rolls.

Further, according to the second embodiment, as mentioned above, the first mass member 202a (the second mass member 202b) is constructed to be arranged under the state of the first recess 212 (the second recess 213) at the first 202a of mass member portion (the second 202b of mass member portion), the first periphery rolled portion 202d (the second periphery rolled portion 202e) rolls along the first rolling guiding surface 215a, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, the 202c of roller bearing portion rolls along the internal surface that forms the rolling bullport 214 of the second rolling guiding surface 215b.Therefore, when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, the track that the rolling track of mass member 202 can roll at the rolling guiding surface 215a of the first recess 212 (the second recess 213) from the first periphery rolled portion 202d (the second periphery rolled portion 202e) of the first 202a of mass member portion (the second 202b of mass member portion) is transitioned into the track that the second rolling guiding surface 215b that the 202c of roller bearing portion forms at the internal surface by rolling bullport 214 rolls.

According to the second embodiment, as mentioned above, the second rolling guiding surface 215b (202c of roller bearing portion of mass member 202 rolls on this second rolling guiding surface 215b) forms radially shorter, the circumferential longer ellipse in edge along board member 201.Therefore, because the second rolling guiding surface 215b can be defined as radially shorter along board member 201, so be equal to or greater than predetermined extent in the situation that present the torsional vibration of bent axle 120a, can more effectively suppress mass member 202 and move along the larger of radially inward direction of board member 201.

Further, according to the second embodiment, as mentioned above, tapered portion 202h(tapered portion 202i) be formed on first 202a(of mass member portion the second 202b of mass member portion of mass member 202) the part place that faces with each other with board member 201.Therefore, first 202a(of mass member portion the second 202b of mass member portion due to mass member 202) with the size reduction of the area of contact of board member 201, so can reduce first 202a(of mass member portion the second 202b of mass member portion because of mass member 202) with board member 201 between the sliding hysteresis loss causing that hinders.

Further, according to the second embodiment's structure, its similar first embodiment, because by being configured to when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, the track that the rolling track of mass member 202 rolls at arc the first rolling guiding surface 215a from mass member 202 is switched to the track that the second different rolling guiding surface 215b of track that mass member 202 rolls at the first rolling guiding surface 215a from mass member 202 at track rolls continuously or smoothly, be transitioned into the track that mass member 202 rolls at the second rolling guiding surface 215b the smooth trajectory that the rolling track of mass member 202 can roll at the first rolling guiding surface 215a from mass member 202, even when presenting the torsional vibration of bent axle 120a and be equal to or greater than predetermined extent, can suppress the noise because of the collision generation of mass member 202.

Those of other effects of the second embodiment and advantage and the first embodiment are identical.

The embodiment of the first to the tenth remodeling of the second embodiment will be explained below.According to the second embodiment, as shown in figure 13, at first 202a(of mass member portion the second 202b of mass member portion) upper formation towards the outstanding tapered portion 202h(tapered portion 202i of board member 201).Alternatively, can adopt shown in Figure 15 A to Figure 15 E according to the second embodiment's first to the 5th modified example.

More specifically, according to the first modified example shown in Figure 15 A, board member 301a towards first 302a(of mass member portion the second 302b of mass member portion) part on form be recessed into as frustoconical or be recessed into the tapered portion 301b(tapered portion 301c into annular flat nose cone shape).Further, according to the modified example shown in Figure 15 B, board member 301d towards first 302a(of mass member portion the second 302b of mass member portion) part on towards first 302a(of mass member portion the second 302b of mass member portion) outstanding one-tenth frustoconical or circularize the tapered portion 301e(tapered portion 301f of tack taper).Further, according to the 3rd modified example shown in Figure 15 C, at first 302c(of mass member portion the second 302d of mass member portion) towards forming and be recessed into as frustoconical or be recessed into the tapered portion 302e(tapered portion 302f into circular flat nose cone shape in the part of board member 201).In addition, according to the 4th modified example shown in Figure 15 D, at first 302g(of mass member portion the second 302h of mass member portion) towards forming towards the outstanding protuberance 302i(protuberance 302j of board member 201 in the part of board member 201), in the position near the roller bearing 202c of portion, form protuberance 302i(protuberance 302j).Further, according to the 5th modified example shown in Figure 15 E, board member 301g towards first 302a(of mass member portion the second 302b of mass member portion) part form first 302a(of mass member portion the second 302b of mass member portion).The first 302a of mass member portion, 302c, 302g are used as the example of the first mass member.The second 302b of mass member portion, 302d, 302h are used as the example of the second mass member portion.

Further, according to the second embodiment, the rolling bullport 214 that forms the second rolling guiding surface 215b forms ellipsoidal structure.Alternatively, can adopt disclosed structure in the 6th to the 9th modified example of the second embodiment shown in Figure 16 A to Figure 16 D.

Particularly, according to the 6th modified example shown in Figure 16 A, by rolling bullport 214a being formed to oblong or avette (trade shape), the second rolling guiding surface 215c consisting of rolling bullport 214a forms oblong or avette (trade shape).Further, according to the 7th modified example shown in Figure 16 B, by rolling bullport 214b being formed to circle or annular (ring), the second rolling guiding surface 215d consisting of the internal surface of rolling bullport 214b forms ellipsoidal structure.Further, according to the 8th modified example shown in Figure 16 C, by rolling bullport 214c being formed to substantially triangle (as the structure on mountain), the second rolling guiding surface 215e consisting of the internal surface of rolling bullport 214c forms triangle (as the structure on mountain) substantially.In addition, according to the 9th modified example shown in Figure 16 D, by the internal surface of rolling bullport 214d being formed to heart (crooked oblong), the second rolling guiding surface 215f being formed by the internal surface of rolling bullport 214d forms heart (oblong of bending).

According to the second embodiment, the second rolling guiding surface 215b that the internal surface by the rolling bullport 214 of board member 201 forms is set.Alternatively, according to the tenth modified example of the second embodiment shown in Figure 17, on board member 301j, form a plurality of protuberance 301k that are column, and form the second rolling guiding surface 315a(by the outer surface of protuberance 301k, as rolling guiding surface).Under those situations, mass member 302k is formed with the through hole 3021 of ovalize, and protuberance 301k can insert through hole 3021.So, when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, the rolling track of mass member 302k from the periphery rolled portion 302m of mass member 302k at the first rolling guiding surface 315b(of board member 301j, as rolling guiding surface) the upper track rolling is switched to the track rolling on the second rolling guiding surface 315a that internal surface rolled portion 302n that the internal surface by the through hole 3021 of mass member 302k forms forms at the outer surface of the protuberance 301k by board member 301j continuously or smoothly.

The disclosed embodiments are only examples, and are not limited to this.

For example, according to the first embodiment, disclose the annular connector element 3 of a plurality of mass members 2 of connection of paired use, yet this structure is not limited to this.Alternatively, only single annular connector element can be set.

Further, according to the first embodiment, protuberance 221(the first joining portion is set on mass member 2), the 31(of hole portion the second joining portion engaging with protuberance 221 is set on connector element 3), yet this structure is not limited to this.Alternatively, hole portion can be arranged on mass member, and the protuberance engaging with hole portion can be arranged on connector element.

According to the second embodiment, first 202a(of mass member portion the first mass member) and second 202b(of mass member portion the second mass member) be all arranged on mass member 202 places, however this structure is not limited to this.Alternatively, the only one in the first mass member portion (the first mass member) and the second mass member portion (the second mass member) can be arranged on mass member place.Under those situations, the recess with the first rolling guiding surface can be arranged on the first surface of board member and the only one place in second surface.

Further, according to the first and second embodiments, torque fluctuation absorber is configured to absorb the torsional vibration of the bent axle of motor, yet this structure is not limited to this.Alternatively, torque fluctuation absorber can be configured to the torsional vibration of the transmission system except bent axle of the torque ripple in response to motor to absorb.

Further, according to the first and second embodiments, anti-slip component is arranged to the periphery of covering quality member, yet this structure is not limited to this.Alternatively, anti-slip component can be arranged on the rolling guiding surface that mass member rolls thereon, rather than is set on mass member.Further, alternatively, anti-slip component can be arranged at rolling guiding surface that mass member and mass member roll thereon on the two.

Further, according to the first and second embodiments, anti-slip component is formed from a resin, yet this structure is not limited to this.Alternatively, anti-slip component can be made by the material except resin, and for example anti-slip component can be made by rubber component.

When presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, by setting mass member, on the second rolling guiding surface, roll and can not move larger track, or the smooth trajectory ground that rolls at arc the first rolling guiding surface from mass member of the track that makes mass member along radially moving inward of board member or be switched to continuously the track (they are different from the track that mass member rolls at the first rolling guiding surface) that mass member rolls at the second rolling guiding surface, after the track rolling at the first rolling guiding surface from mass member at the track of mass member is switched to the track that mass member rolls at the second rolling guiding surface, can suppress mass member departing from or moving along the radially inward direction of board member.Under those situations, because can suppress mass member along the increase of the moving range radially of board member, so can make the size of torque fluctuation absorber respective degrees reduce, therefore, when presenting the torsional vibration of delivery system and be equal to or greater than predetermined extent, can suppress the noise that the collision because of mass member produces, make the size reduction of torque fluctuation absorber simultaneously.

According to embodiment's structure, when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, can suppress the noise that mass member produces because of collision.

The torque fluctuation absorber absorbing to the torsional vibration of the transmission system of the torque ripple in response to motor comprises board member, and it is arranged on transmission system place and comprises and forming along circumferential a plurality of arc rolling guiding surfaces adjacent one another are; And mass member, it rolls on the rolling guiding surface of board member, wherein a plurality of arc rolling guiding surfaces of board member are configured to, and when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, allow mass member to move to adjacent rolling guiding surface.According to aforementioned structure, because when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, mass member moves to another rolling guiding surface of adjacent this rolling guiding surface from rolling guiding surface, thereby allows mass member along the circumferential movement of board member.Therefore, even when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, can suppress mass member along the larger movement of the radially inward direction of board member.Therefore, can suppress mass member along the increase of the moving range radially of board member, this allows to reduce the size of torque fluctuation absorber.

According to torque fluctuation absorber, board member comprises the recess that is arranged on the first surface place of board member and comprises a plurality of arc rolling guiding surfaces, mass member comprises and is configured to roll and to be arranged in the periphery rolled portion of recess simultaneously along rolling guiding surface, and mass member is configured to when the torsional vibration of transmission system is greater than or less than predetermined extent, move to adjacent rolling guiding surface when presenting.According to aforementioned structure, when presenting the torsional vibration of transmission system and be equal to or greater than predetermined extent, mass member can be easily along the circumferential movement of board member.

Torque fluctuation absorber also comprises that a plurality of mass members of connection keep the annular connector element of intended distance each other simultaneously.According to aforementioned structure, even when mass member circumferentially moves to another rolling guiding surface of adjacent this rolling guiding surface from rolling guiding surface edge, interval between mass member or distance can be kept by connector element, therefore can prevent adjacent mass member collision.Therefore, can suppress the noise that the collision due to mass member produces.Further, by connecting a plurality of mass members by annular connector element, along the enough single connector element integrated connections of a plurality of mass members energy that circumferentially arrange, therefore than the structure that independent connector element is set and connects respectively for adjacent mass member, can suppress increasing of number of spare parts between adjacent mass member.Further, because compare with the structure that connector element is not set, adjacent mass member keeps the state of opening by constant interval or separating distance, can reduce distance or interval between adjacent mass member.Therefore, because the mass member of greater number can be set, so can strengthen the assimilation effect of torque vibration.

Claims

1. the torque fluctuation absorber torsional vibration of the transmission system of the torque ripple in response to motor (120a) being absorbed, comprising:

Board member (1,101a, 101b, 101c, 201,301a, 301d, 301g, 301j), is configured to be arranged on described transmission system (120a) and locates and comprise rolling guiding surface (121,215,315a, 315b);

Mass member (2,202,302k), the rolling guiding surface of described board member (1,101a, 101b, 101c, 201,301a, 301d, 301g, 301j) (121,215,315b) upper rolling; And

Described rolling guiding surface (121,215,315b) comprising: a plurality of the first rolling guiding surface (121a, 215a, 315b), each first rolling guiding surface is all formed arc and is arranged on respect to described board member (1,101a, 101b, 101c, 201,301a, 301d, 301g, the radially inner side of peripheral part 301j), thus along circumferential, arranged; With the second rolling guiding surface (121b, 121d, 215b, 215c, 215d, 215e, 215f, 315a), allow described mass member (2,202,302k) at described the first rolling guiding surface (121a with forming arc, 215a, 315) on the different track of track on, roll, wherein

(2,202, track 302k) is from described mass member (2 for described mass member, 202,302k) at described the first rolling guiding surface (121a, 215a, 315b) be switched to the upper smooth trajectory rolling described mass member (2,202,302k) at described the second rolling guiding surface (121b, 121d, 215b, 215c, 215d, 215e, 215f, 315a) the upper track rolling.

2. torque fluctuation absorber according to claim 1, wherein at described mass member (2, 202, 302k) at described the first rolling guiding surface (121a, 215a, 315b) be switched to described mass member (2 the upper smooth trajectory rolling, 202, 302k) at described the second rolling guiding surface (121b, 121d, 215b, 215c, 215d, 215e, 215f, 315a) after the upper track rolling, described mass member (2, 202, track 302k) is further from described mass member (2, 202, 302k) at described the second rolling guiding surface (121b, 121d, 215b, 215c, 215d, 215e, 215f, 315a) be switched to described mass member (2 the upper smooth trajectory rolling, 202, 302k) at described the first rolling guiding surface (121a, 215a, 315b) the upper track rolling.

3. torque fluctuation absorber according to claim 1 and 2, described board member (1,101a, 101b, described a plurality of the first rolling guiding surfaces (121a) that form separately arc 101c) are formed along circumferentially adjacent one another are via described the second rolling guiding surface (121b, 121d); Wherein

When presenting the torsional vibration of described transmission system (120a) and be equal to or greater than predetermined extent, described mass member (2) moves to the first adjacent rolling guiding surface (121a) via described the second rolling guiding surface (121b, 121d).

4. torque fluctuation absorber according to claim 3, wherein said a plurality of the first rolling guiding surface (121a) comprises the outer circumferential side rolling guiding surface (121a) of a plurality of arcs, described outer circumferential side rolling guiding surface is set at described board member (1,101a, 101b, 101c) peripheral part place along circumferentially adjacent one another are; And

When presenting the torsional vibration of described transmission system (120a) and be equal to or greater than predetermined extent, described the second rolling guiding surface (121b, 121d) is configured to connect described the first rolling guiding surface (121a) adjacent one another are and is configured to guide described mass member (2) to move to adjacent outer circumferential side rolling guiding surface (121a).

5. torque fluctuation absorber according to claim 4, wherein said board member (1,101a, 101b, 101c) comprise the inner circumferential side limiting surface (122) of a plurality of arcs, described inner circumferential side limiting surface is at described board member (1,101a, 101b, the interior perimembranous place being arranged at respect to the radially inner side of described outer circumferential side rolling guiding surface (121a) 101c) arranges, and described inner circumferential side limiting surface (122) is moved along circumferentially arranging and limit the radially inside direction of described mass member (2).

6. torque fluctuation absorber according to claim 5, each in each in wherein said inner circumferential side limiting surface (122) and described outer circumferential side rolling guiding surface (121a) is relative to each other along circumferential offset half pitch.

7. according to the torque fluctuation absorber described in any one in claim 3 to 6, also comprise:

Annular connector element (3,103a, 103c, 103e, 103g), described annular connector element connects described a plurality of mass members (2), makes described a plurality of mass member (2) keep each other intended distance.

8. torque fluctuation absorber according to claim 7, each in wherein said a plurality of mass members (2) include be formed with the one in protuberance and hole portion the first joining portion (221,221a); And

Described connector element (3,103a, 103c, 103e, 103g) comprise a plurality of the second joining portion (31,131), each in described a plurality of the second joining portion is all formed with the another one in described protuberance and described hole portion, described first joining portion of described a plurality of mass member (2) (221,221a) join each in described a plurality of the second joining portion (31,131) to, so that along described board member (1,101a, 101b, 101c) radially can move.

9. according to the torque fluctuation absorber described in claim 7 or 8, wherein said connector element (3,103a, 103c, 103e, 103g) and described board member (1,101a, 101b, one 101c) is at described connector element (3,103a, 103c, 103e, 103g) and described board member (1,101a, 101b, 101c) towards part place each other, be formed with tapered portion (103b, 103d, 123a, 123c) or protuberance (103f, 123e).

10. according to the torque fluctuation absorber described in any one in claim 3 to 9, wherein said the second rolling guiding surface (121b, 121d) is formed plane.

11. torque fluctuation absorbers according to claim 1 and 2, wherein said the second rolling guiding surface (215b, 215c, 215d, 215e, 215f, 315a) be constructed to allow described mass member (202,302k) on described the second rolling guiding surface, with the less radius of gyration of the radius of gyration than on the first rolling guiding surface (215a, 315b) of described arc, roll.

12. torque fluctuation absorbers according to claim 11, wherein said mass member (202, 302k) comprise periphery rolled portion (202e, 202d, 302m) with roller bearing portion (202c), described periphery rolled portion is at described board member (201, 301a, 301d, 301g, the first rolling guiding surface (215a 301j), 315b) upper rolling, the external diameter of described roller bearing portion is than described mass member (202, periphery rolled portion (202e 302k), 202d, external diameter 302m) is little, and described roller bearing portion is at described the second rolling guiding surface (215b, 215c, 215d, 215e, 215f, 315a) upper rolling.

13. torque fluctuation absorbers according to claim 12, wherein said mass member (202) comprises at least one in the first mass member (202a) and the second mass member (202b);

Described the second rolling guiding surface (215b, 215c, 215d, 215e, 215f) is formed by the internal surface that is set to run through the rolling bullport (214,214a, 214b, 214c, 214d) of described board member (201); And

Described first mass member (202a) of at least one in described the first mass member (202a) and described the second mass member (202b) and the wherein one of described the second mass member (202b) are arranged under the state at the first side of described board member (201) and the one place of the second side, or lay respectively under the first side of described board member (201) and the state at any one place in the second side at described the first mass member (202a) and described the second mass member (202b), at least one in described the first mass member (202a) and described the second mass member (202b) is connected to and is positioned at described rolling bullport (214, 214a, 214b, 214c, described roller bearing portion (202c) 214d).

14. torque fluctuation absorbers according to claim 13, wherein said board member (201) comprises recess (212,213), described recess is arranged on first surface (201a) and at least one place in second surface (201b) of described board member (201) and comprises described the first rolling guiding surface (215a);

At least one in described the first mass member (202a) and described the second mass member (202b) comprises described periphery rolled portion (202d, 202e), periphery rolled portion (the 202d of at least one in described the first mass member (202a) and described the second mass member (202b), 202e) under the state that is positioned at described recess (212,213), along described the first rolling guiding surface (215a), roll; And

When presenting the torsional vibration of described transmission system (120a) and be equal to or greater than predetermined extent, described roller bearing portion (202c) is along forming described the second rolling guiding surface (215b, 215c, 215d, 215e, 215f) described rolling bullport (214,214a, 214b, 214c, 214d) internal surface roll.

15. according to claim 12 to the torque fluctuation absorber described in any one in 14, described the second rolling guiding surface (215b that wherein supplies the roller bearing portion (202c) of described mass member (202) to roll thereon, 215c, 215d, 215e, 215f) be formed along described board member (201) radially compared with short and along the circumferential longer structure of described board member (201).

16. according to claim 11 to the torque fluctuation absorber described in any one in 15, one in wherein said mass member (202) and described board member (201) is formed with tapered portion (202h, 202i, 301b at described mass member (202) and described board member (201) towards part place each other, 301c, 301e, 301f, 302e, 302f) or protuberance (301h, 301i, 302i, 302j).

17. according to the torque fluctuation absorber described in any one in claim 1 to 16, also comprises:

Anti-slip component (21a, 21b), is mounted to the periphery that covers described mass member (2,202a, 202b, 302a, 302b, 302c, 302d, 302g, 302h).